StimBR – Matrix Stimulation Simulator
Advanced Engineering for Acidizing Optimization
Overview
StimBR is SimWorx’s state-of-the-art numerical simulator designed to analyze, plan, and optimize matrix acidizing treatments in carbonate formations. Combining advanced physics-based models with intelligent optimization routines, StimBR empowers engineering teams to make faster, smarter decisions in well stimulation operations.
Core Technology
At the heart of StimBR lies the WellWorx® numerical kernel, SimWorx’s 3D Finite Element simulator for coupled well and reservoir flow. StimBR extends WellWorx with a PVbT-based reactive flow model, incorporating:
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Multi-phase, compressible flow
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Accurate acid displacement tracking
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Auto-calibration via history matching
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Coupled near-wellbore damage and reactive dissolution
Key Features
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Full Coupling: Integrates wellbore flow, reactive transport, and reservoir response
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Wormhole Propagation Modeling: Simulates acid-rock interactions and pore volume to breakthrough (PVbT) using validated models (Tardy et al., SPE 107854)
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Support for Various Completions: Regular perforations, ICVs, and AICDs
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Self-Diverting Strategies: Accounts for inert fluids, short-circuiting, and divergence agents
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Skin Evaluation: Pre- and post-treatment skin analysis
Technical Highlights
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FEM-based simulator with fully unstructured mesh support
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High-performance parallel computing: shared and distributed memory
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Realistic acid displacement including pre-flush inert fluid behavior
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Capability to simulate bullheading and flexitube operations
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Time-step–based update of pressure, velocity, acid front, and permo-porosity corrections
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Built-in genetic algorithm and augmented Lagrangian optimization
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History matching engine for skin and acid consumption curves
Applications
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Acid stimulation design for carbonate reservoirs
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Decision support for field engineers and planners
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Pre-job and post-job evaluation of matrix acidizing campaigns
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Rapid scenario testing for completion sensitivity and acid volumes
User Interface & Decision Support
StimBR includes a powerful desktop UI tailored for engineering workflows, with input tabs for:
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Lithology and reservoir properties
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Injection programs and field data
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Interactive visualization of:
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Skin and treatment coverage
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Pressure and accumulated flow
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Invasion radius and fluid velocity
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Real-time acid consumption and skin correction
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The interface provides instant feedback on treatment efficiency, making StimBR a valuable decision support tool before, during, and after stimulation jobs.
Want to Learn More?
Visit www.simworx.com.br or contact our team at info@simworx.com.br for a demo or technical presentation.